/* * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #include /* offsetof */ #include /* printf */ #include "wayland-egl-backend.h" /* Current struct wl_egl_window implementation */ /* * Following are previous implementations of wl_egl_window. * * DO NOT EVER CHANGE! */ /* From: 214fc6e850 - Benjamin Franzke : egl: Implement libwayland-egl */ struct wl_egl_window_v0 { struct wl_surface *surface; int width; int height; int dx; int dy; int attached_width; int attached_height; }; /* From: ca3ed3e024 - Ander Conselvan de Oliveira : egl/wayland: Don't invalidate drawable on swap buffers */ struct wl_egl_window_v1 { struct wl_surface *surface; int width; int height; int dx; int dy; int attached_width; int attached_height; void *private; void (*resize_callback)(struct wl_egl_window *, void *); }; /* From: 690ead4a13 - Stencel, Joanna : egl/wayland-egl: Fix for segfault in dri2_wl_destroy_surface. */ #define WL_EGL_WINDOW_VERSION_v2 2 struct wl_egl_window_v2 { struct wl_surface *surface; int width; int height; int dx; int dy; int attached_width; int attached_height; void *private; void (*resize_callback)(struct wl_egl_window *, void *); void (*destroy_window_callback)(void *); }; /* From: 2d5d61bc49 - Miguel A. Vico : wayland-egl: Make wl_egl_window a versioned struct */ #define WL_EGL_WINDOW_VERSION_v3 3 struct wl_egl_window_v3 { const intptr_t version; int width; int height; int dx; int dy; int attached_width; int attached_height; void *driver_private; void (*resize_callback)(struct wl_egl_window *, void *); void (*destroy_window_callback)(void *); struct wl_surface *surface; }; /* This program checks we keep a backwards-compatible struct wl_egl_window * definition whenever it is modified in wayland-egl-backend.h. * * The previous definition should be added above as a new struct * wl_egl_window_vN, and the appropriate checks should be added below */ #define MEMBER_SIZE(type, member) sizeof(((type *)0)->member) #define CHECK_RENAMED_MEMBER(a_ver, b_ver, a_member, b_member) \ do { \ if (offsetof(struct wl_egl_window ## a_ver, a_member) != \ offsetof(struct wl_egl_window ## b_ver, b_member)) { \ printf("Backwards incompatible change detected!\n " \ "offsetof(struct wl_egl_window" #a_ver "::" #a_member ") != " \ "offsetof(struct wl_egl_window" #b_ver "::" #b_member ")\n"); \ return 1; \ } \ \ if (MEMBER_SIZE(struct wl_egl_window ## a_ver, a_member) != \ MEMBER_SIZE(struct wl_egl_window ## b_ver, b_member)) { \ printf("Backwards incompatible change detected!\n " \ "MEMBER_SIZE(struct wl_egl_window" #a_ver "::" #a_member ") != " \ "MEMBER_SIZE(struct wl_egl_window" #b_ver "::" #b_member ")\n"); \ return 1; \ } \ } while (0) #define CHECK_MEMBER(a_ver, b_ver, member) CHECK_RENAMED_MEMBER(a_ver, b_ver, member, member) #define CHECK_MEMBER_CURRENT(a_ver, member) CHECK_MEMBER(a_ver,, member) #define CHECK_SIZE(a_ver, b_ver) \ do { \ if (sizeof(struct wl_egl_window ## a_ver) > \ sizeof(struct wl_egl_window ## b_ver)) { \ printf("Backwards incompatible change detected!\n " \ "sizeof(struct wl_egl_window" #a_ver ") > " \ "sizeof(struct wl_egl_window" #b_ver ")\n"); \ return 1; \ } \ } while (0) #define CHECK_SIZE_CURRENT(a_ver) \ do { \ if (sizeof(struct wl_egl_window ## a_ver) != \ sizeof(struct wl_egl_window)) { \ printf("Backwards incompatible change detected!\n " \ "sizeof(struct wl_egl_window" #a_ver ") != " \ "sizeof(struct wl_egl_window)\n"); \ return 1; \ } \ } while (0) #define CHECK_VERSION(a_ver, b_ver) \ do { \ if ((WL_EGL_WINDOW_VERSION ## a_ver) >= \ (WL_EGL_WINDOW_VERSION ## b_ver)) { \ printf("Backwards incompatible change detected!\n " \ "WL_EGL_WINDOW_VERSION" #a_ver " >= " \ "WL_EGL_WINDOW_VERSION" #b_ver "\n"); \ return 1; \ } \ } while (0) #define CHECK_VERSION_CURRENT(a_ver) \ do { \ if ((WL_EGL_WINDOW_VERSION ## a_ver) != \ (WL_EGL_WINDOW_VERSION)) { \ printf("Backwards incompatible change detected!\n " \ "WL_EGL_WINDOW_VERSION" #a_ver " != " \ "WL_EGL_WINDOW_VERSION\n"); \ return 1; \ } \ } while (0) int main(int argc, char **argv) { /* Check wl_egl_window_v1 ABI against wl_egl_window_v0 */ CHECK_MEMBER(_v0, _v1, surface); CHECK_MEMBER(_v0, _v1, width); CHECK_MEMBER(_v0, _v1, height); CHECK_MEMBER(_v0, _v1, dx); CHECK_MEMBER(_v0, _v1, dy); CHECK_MEMBER(_v0, _v1, attached_width); CHECK_MEMBER(_v0, _v1, attached_height); CHECK_SIZE(_v0, _v1); /* Check wl_egl_window_v2 ABI against wl_egl_window_v1 */ CHECK_MEMBER(_v1, _v2, surface); CHECK_MEMBER(_v1, _v2, width); CHECK_MEMBER(_v1, _v2, height); CHECK_MEMBER(_v1, _v2, dx); CHECK_MEMBER(_v1, _v2, dy); CHECK_MEMBER(_v1, _v2, attached_width); CHECK_MEMBER(_v1, _v2, attached_height); CHECK_MEMBER(_v1, _v2, private); CHECK_MEMBER(_v1, _v2, resize_callback); CHECK_SIZE(_v1, _v2); /* Check wl_egl_window_v3 ABI against wl_egl_window_v2 */ CHECK_RENAMED_MEMBER(_v2, _v3, surface, version); CHECK_MEMBER (_v2, _v3, width); CHECK_MEMBER (_v2, _v3, height); CHECK_MEMBER (_v2, _v3, dx); CHECK_MEMBER (_v2, _v3, dy); CHECK_MEMBER (_v2, _v3, attached_width); CHECK_MEMBER (_v2, _v3, attached_height); CHECK_RENAMED_MEMBER(_v2, _v3, private, driver_private); CHECK_MEMBER (_v2, _v3, resize_callback); CHECK_MEMBER (_v2, _v3, destroy_window_callback); CHECK_SIZE (_v2, _v3); CHECK_VERSION(_v2, _v3); /* Check current wl_egl_window ABI against wl_egl_window_v3 */ CHECK_MEMBER_CURRENT(_v3, version); CHECK_MEMBER_CURRENT(_v3, width); CHECK_MEMBER_CURRENT(_v3, height); CHECK_MEMBER_CURRENT(_v3, dx); CHECK_MEMBER_CURRENT(_v3, dy); CHECK_MEMBER_CURRENT(_v3, attached_width); CHECK_MEMBER_CURRENT(_v3, attached_height); CHECK_MEMBER_CURRENT(_v3, driver_private); CHECK_MEMBER_CURRENT(_v3, resize_callback); CHECK_MEMBER_CURRENT(_v3, destroy_window_callback); CHECK_MEMBER_CURRENT(_v3, surface); CHECK_SIZE_CURRENT (_v3); CHECK_VERSION_CURRENT(_v3); return 0; }